Oil & Gas
| Fri 26 Jun 2026
Beijing, June 27 -- Petrochina Co Limited has filed a patent application for Oilfield Station Crude Oil Wind-solar Complementary Heating System and Method. This invention was developed by Ji Wei, Fan Jing, He Zhanyou, Zhu Yan, Wei Lijun, Tan Chuan, Wang Linping, Li Jianzhong, Wang Man, Xu Wenlong, Cheng Hao, Shi Lei, Feng Jiansh..